XOBX Share definition Flag An XOBX (pronounced to rhyme with obelisk) is an Xbox that's been turned upside-down. I modded my Xbox so hard, it became an XOBX! Now the disc drive makes this really eleet sound. XOBX by ookola January 24, 2008 0 0 Get merch Get the XOBX mug. Buy Now — $32.95 See more merch